21313003221210 has 32 divisors (see below), whose sum is σ = 51222349935360. Its totient is φ = 5675562836288.

The previous prime is 21313003221131. The next prime is 21313003221277. The reversal of 21313003221210 is 1212230031312.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494021157 + ... + 494064296.

It is an arithmetic number, because the mean of its divisors is an integer number (1600698435480).

Almost surely, 2^{21313003221210} is an apocalyptic number.

21313003221210 is an abundant number, since it is smaller than the sum of its proper divisors (29909346714150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21313003221210 is a wasteful number, since it uses less digits than its factorization.

21313003221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988086182.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21313003221210 its reverse (1212230031312), we get a palindrome (22525233252522).

The spelling of 21313003221210 in words is "twenty-one trillion, three hundred thirteen billion, three million, two hundred twenty-one thousand, two hundred ten".